Just saw this interesting little tidbit from the press junkets running up to the release of The Hobbit 2: Elves and Spiders Boogaloo... (Very mild, inconsequential spoilers for The Desolation of Smaug beyond the cut!)
Despite a lot of umming and ahhing over her addition in the run up to the release The Desolation of Smaug, Evangeline Lily's Tauriel seemingly won people over with her Elven wanderlust and combat badassery... but her relationships with Kili and Legolas, less so. It turns out that Lily herself didn't want to be involved in a love triangle either - and originally, she wasn't.
Speaking to Access Hollywood in the run up to The Desolation of Smaug's release, Lily revealed that in the original cut of the movie, there was no love triangle developing between Tauriel, Legolas and Kili - it was something added in later reshoots, supposedly against her wishes:
For the record, when I took this job, in 2011, I made one stipulation. That’s it. I just said… I swear to God, I said, ‘I will not do this film if you will not guarantee me one thing. You have to guarantee me there will be no love triangle.’ And there wasn’t. For the whole time I shot. For a year of shooting there was no love triangle...
...And then, I came back for reshoots in 2012 and they were like, ‘Well, we made a couple of alterations to some scenes and we added a couple more scenes,’” the actress continued. “And all of a sudden manifested a love triangle before my very eyes and the film was shot and I’m in and there’s no getting out and there was no escaping it.
It's a shame that the additions made to Tauriel's character as the film series grew from two movies to three were to essentially adding this romantic element in. I mean, I'm not super down on her character for having this love triangle arc, she's still a great addition in my eyes, but man... more Tauriel being awesome and capable and questioning Elven isolation, and less dwarf/elf/elf romance, Mr. Jackson.